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While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 56-kg person develops a power of 66 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.)
If an piece of Iron (c = 450 J/kg C) at 65.00 C is dropped into .250 kg of ethyl alcohol at 25.00 C and the final temperature of the two comes to 35.00 C what was the mass of the piece of iron
q1. the sport with the fastest moving ball is jai alai where measured speeds have reached 303kmh. if a professional jai
A rod 14 cm long is uniformly charged and has a total charge of -22 c. resolve the magnitude and direction of the electric field all along the axis of the rod at a point 36.0 cm from its center.
A toaster operating on 120 V uses a current of 15.0 A. What is the toaster's power consumption, what is the cost of using the toaster for 3.2 min
a 100kg object is pulled verticaly upwards by a constant force of 4000 N for a distance of 20 m. what is the work done by the applied force on the object
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground when he slows down.
A 4.1-kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket
A car was seen driving off the edge of a cliff at an angle of 10 ° above the horizontal. The cliff is 95m high and the car impacted the ground at a distance of 156m from the base of the cliff. What is the speed of the car.
A 94 g stone is whirled in a horizontal circle on the end of a 73 cm long string. The stone takes 1.10 s to make each complete revolution. Conclude the angle that the string makes with the horizontal.
You want to create an electric field at location. where would you place an electron to produce this filed at the origin
A capacitor with capacitance C = 4.10·10^-6 F is connected to an AC power source having a peak value of 6.0 V and f = 130 Hz. Find the reactance of the capacitor
The current in a 100 watt lightbulb is 0.720A. The filament inside the bulb is 0.240mm in diameter. What is the electron current in the filament
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